Table 2 Danish registers used in analysis

From: Breast cancer and income loss in Denmark: heterogeneous outcomes and longitudinal effects

Registry

Provider

Data years

Matching variables

used

Danish Breast Cancer

Registry (DBCG)

Danish Breast Cancer Group

1995–2018

Danish National Population Registry

Statistics Denmark

1995–2023

Age (5-year bins), relationship status, household size

Danish Income Statistics Registry

Statistics Denmark

1995–2023

Disposable personal and household equivalized income level at baseline

National Patient Register

Statistics Denmark

1995–2023

Hospital utilization rate 2 years before diagnosis, presence of comorbidities

Integrated Student Register

Statistics Denmark

1995–2023

Highest achieved education

  1. Danish Breast Cancer Registry is used for identification of the exposed population, and additional registers are used for matching between exposed and controls.